Nonslip wrench



June 17, 1952 P. c. SNYDER 2,601,064

NONSLIP WRENCH Filed Aug. 7, 1950 BY dmym ATTORNEYS Patented June 17,1952 UN D STATE S FATE O FFIC N'ONASEIP WRENCH Peter" Charles Snyder,Shickshinny, Pa.

ApplicationAugustfi, 1950, Serial No.- 178 063 The invention relates toa safety non-slip ratchet wrench for automobile transportingtrucks.

With the ordinary spanner wrench, custom arily employed for engaging theratchetwheel of the winding shaft or winch-fortightening the chains orcables for securing aplurality of automobiles to an automobiletransportingtruck there is nothing to prevent side slipof the spannerand frequently when heavy pressure is appliedlthe spannerslips sidewise.which not only oftenrcsults in injury to the person using the spannerbut also damage to the automobiles.

It is," therefora an object of'the invention to provide a simplepractical and-"efficient non slip ratchet wrench of strong and durableconstruction; adapted to-enable heavy pressure to be ap-'- pliedforrotating the winding shaft" or' winch without liability of side slip orthe wrench other-@- wise becoming disengaged from the associated ratchetwheel.

A fu-rther-object of the invention is to provide' anon-slip ratchetwrench of this character which will aiford greater freedom of' movementforrotatingthe winding-shaft and in' which heavy operating pressure willresult in a tightergripping of, the ratchet wheel by the wrench.

With the'above and'other objectsin view, the

invention consists in the construction and novel' combination andarrangement of parts herein after fully described, illustrated in theaccompanying drawings and pointed out in" the: claims hereto appended;it being understood that various changes in the form; proportions, andminor details of' construction; within the scope of the claims, may beresorted to without departing.

Fig; 4 is an enlarged detail perspective'view of one-end of thewindingshaft illustrating the arrangement ofjthejratchet wheel and safetycollarwith which theratchet wrench cooperates Fig. 5 is a detailperspective view of one ofthe:

pawlsof the ratchet wrench;

Figafiis a detail --view of a portion of" the auto- 8*Claims; (Cl.74-156)- mobile transporting truck and illustrating-2 the" arrangementof the windingshaft or winch;-

Fig. '7 is a detail transverse sectional View;

partly: in elevation/illustrating the manner.- of

' mountingthe'winding shaft or winch.

In the accompanying drawingv in which is illustrated the preferredembodiment of themvention, the safety non-slip ratchetwrench'conesistsof a bar I providing at one'end a handleportion 2 and having a head" 3at the other end.

consisting of an enlargement provided with a substantially keyholeshaped opening 4- disposed longitudinally of the head and consistingofan enlarged circular outer portion 5 and an inner. reduced portion 6defined byparallel side-wallsandan approximately semicircular endwall 8;

The head is provided at opposite sides with-ears 9' and I0 to which arepivoted pawls H and: I2 located at theinner side face of the head.Thepawls l l and Rare mountedon pivotbolts I37and l4 having smooth pivotportionsand provided-:atone end with a head and having a nut l5 or Hrforengaging the threads of the bolt.

When the ratchet wrench is applied to the winding shaft or winch I! thepawl engages the teeth E8 of a supplemental ratchet wheel I9 mounted onthe winding shaft and suitably secured thereto. adjacent an inner collar20 which: spacesthe supplemental ratchet wheelfrom' the conventionalratchet wheel 21 of the winding shaft or winch. Theconventionalratchet-wheel 2| is engaged by a gravity actingpawl 2 2-mount-- ed'on a suitable pivot 23 of one of the. frame members 24 ofthe truck 25= The pawl 22 which handle 26 for enabling it to be readilydisengaged from the ratchet wheel when it is desired to removetheautomobiles carried by the transporting truck.

to the winding shaft it is arranged between the supplemental ratchetwheel I!) and an outer collar 21 spaced from the supplemental ratchet.

wheel to provide an annular groove 28*to receive the reduced innerbearing'portion 6 of the keyhole shaped opening of the head of theratchet wrench. The reduced inner portion 6 of the key-- hole openingisof a width to receive thewinding shaft at the groove 28 and the outersafety collar 21 is of greater diameter than the width of the reducedportion 6 of the keyhole opening so that when the ratchet wrench isapplied to the winding shaft, as illustrated inFigs. 2 and 3 of thedrawing, it cannot slip sidewise and the greaterithe: pressure appliedto'thewrench for is gravity acting. is provided with a suitable When thenon-slip-ratchet wrench is appliedv rotating the winding shaft thetighter the wrench will grip the ratchet wheel without danger of anysidewise slip or injury to the operator or damage to the automobiles onthe truck.

The pawl II is provided with a stop lug 29 which is arranged to engagethe head of the ratchet wrench for limiting the inward movement of thepawl ll so as to position the pawl properly for engaging thesupplemental ratchet wheel.

The large outer portion of the keyhole opening enables the ratchetwrench to be passed over the outer collar 21 of the winding shaft andthe parallel side walls of the smaller inner portion 6 of the opening 4will guide the wrench and move the same longitudinally to bring thecurved end wall into the groove 28 and into engagement with the windingshaft. By arranging the supplemental ratchet wheel and the collar at oneend of the winding shaft, as illustrated in Fig. 7 of the drawing,beyond the conventional ratchet wheel 2 l, the ratchet wrench will haveunlimited rotary movement to tighten the connecting lines 30 for firmlysecuring the automobiles 3| and 32 on the truck 25. The connecting linesmay be chains or cables, diagrammatically illustrated in Fig. 6 of thedrawings. The winding shaft is designed to be provided with one or morehooks 33 or other suitable means for enabling'the lines 30 to beconnected to the winding shaft and one or more guides 34 may be providedfor guiding the lines when necessary.

The pawls H and I2 face inwardly and while only one will be engaged withthe supplemental ratchet wheel l9, they provide for the facing of theteeth of the supplemental ratchet wheel in either direction tocorrespond with the arrangement of the teeth of the conventional ratchetwheel 21 so that should the conventional ratchet wheel 2! have its teethfacing in the opposite direction from that illustrated in the drawing,the supplemental ratchet wheel may be correspondingly positioned and theother pawl I2 will then engage with the supplemental ratchet wheel.

I claim:

1. A ratchet wrench for engaging a ratchet wheel of a winding shaft of atruck for transporting automobiles, said ratchet wrench comprising a barhaving a handle portion at one end and a head at the otherend having alongitudinal opening closed at both ends and defined by connecting sideand end walls, one of the end walls being curved to conform to theconfiguration of the winding shaft and forming a bearing for the ratchetwrench, and a pawl pivotally mounted on the head and arranged to engagesaid ratchet wheel when the bearing surface is engaged with the windingshaft, said opening at the other end wall being enlarged and of a sizeto permit it to pass over a safety collar fixed to said shaft in spacedrelation to the ratchet wheel to prevent lateral movement of the ratchetwrench when the bearing thereof is in engagement with the shaft. I 1

2. A ratchet wrench for engaging a ratchet wheel of a winding shaft of atruck for transporting automobiles, said ratchet wrench comprising a barhaving a handle portion at one end and provided at the other end-With alongitudinally disposed substantially keyhole shaped opening, thereduced portion of the opening being of a size to fit the winding shaftand presenting a curved bearing surface for engaging the same and theenlarged portion of the opening being of a size to pass over a safetycollar fixed to said shaft in spaced relation with the ratchet wheel toprevent lateral movement of the ratchet wrench when the bearing thereofis in engagement with said shaft, and a pawl pivotally mounted on thehead of said bar and arranged to engage the ratchet wheel when saidcurved bearing surface is engaged with the winding shaft.

3. A ratchet wrench for engaging a ratchet wheel of a winding shaft of atruck for transporting automobiles, said ratchet wrench comprising a barhaving a handle portion at one end and provided at the other end with alongitudinally disposed substantially keyhole shaped opening, thereduced portion of the opening being of a size to fit the winding shaftand presenting a curved bearing surface for engaging the same and theenlarged portion of the opening being of a size to pass over a safetycollar fixed to said shaft in spaced relation with the ratchet wheel toprevent lateral movement of the ratchet wrench when the bearing thereofis in engagement with said shaft, and a pair of pawls pivotally mountedon the head of said bar at the inner face thereof, one of said pawlsbeing in position for engaging the ratchet wheel when the teeth thereofare facing in either direction.

4. A ratchet wrench for engaging a ratchet wheel of a winding shaft of atruck for transporting automobiles, said ratchet wrench comprising a barhaving a handle portion at one end and a head at the other end having alongitudinal opening closed at both ends and defined by connecting sideand end walls, one of the end walls being curved to conform to theconfiguration of the winding shaft and forming a bearing for the ratchetwrench and said opening at the other end wall being enlarged and of asize to permit it to pass over the safety collar fixed to said shaft inspaced relation to the ratchet wheel to prevent lateral movement of theratchet wrench when the bearing thereof is in engagement with the shaft,and a pawl pivotally mounted on the head and arranged to engage saidratchet wheel when the bearing surface is engaged with the windingshaft, and a collar mounted on the winding shaft and spaced from theouter face of the pawl engaged ratchet wheel and forming a groove toreceive the head of the ratchet wrench to prevent side slip of the same.

5. A ratchet wrench for engaging a ratchet wheel of a winding shaft of atruck for transporting automobiles, said ratchet wrench comprising a barhaving a handle portion at one end and provided at the other end with asubstantially keyhole shaped opening closed at both ends, the reducedportion of the opening being of a size to fit the winding shaft andpresenting a curved bearing surface for engaging the same, a pawlpivotally mounted on the head of said bar and arranged to engage theratchet wheel when said curved bearing surface is engaged with thewinding shaft, and a collar mounted on the winding shaft and spaced fromthe outer face of the pawl engaged ratchet wheel and forming a groove toreceive the head of the ratchet wrench to prevent side slip of the sameand the enlarged portion of the opening being of a size to permit theratchet wrench to pass over the collar and to be positioned at saidgroove whereby said reduced portion of the opening may be engaged withthe shaft between the collar and the ratchet wheel.

6. In combination with a winding shaft having a ratchet wheel andprovided with a collar spaced from the ratchet wheel and forming anannular intervening groove, of a ratchet wrench having a head providedwith a substantially keyhole shaped opening closed at both ends, thelarge portion of the opening being of a size to permit the head to passover the collar and be positioned between the collar and the ratchetwheel and the reduced portion of the opening being of a size to fit thewinding shaft in the groove between the ratchet wheel and the collar,and a pawl pivotally mounted on the head and arranged to engage theteeth of the ratchet wheel for enabling the ratchet wrench to rotate thewinding shaft.

7. In combination with a winding shaft havin a ratchet wheel andprovided with a collar spaced from the ratchet wheel and forming anannular intervening groove, of a ratchet wrench having a head providedwith a substantially keyhole shaped opening closed at both ends anddisposed longitudinally of the ratchet wrench, the large portion of theopening being located at the outer end thereof and of a size to permitthe head to pass over the collar and be positioned between the collarand the ratchet wheel and the reduced portion of the opening beinglocated at the inner end thereof and being of a size to fit the windingshaft in the groove between the ratchet wheel and the collar, and a pawlpivotally mounted on the head and arranged to engage the teeth of theratchet wheel for enabling the ratchet wrench to rotate the windingshaft.

8. In combination with a winding shaft having a ratchet wheel andprovided with a collar spaced from the ratchet wheel and forming anannular intervening groove, of a ratchet wrench having a head providedwith a substantially keyhole shaped opening closed at both ends anddisposed longitudinally of the ratchet wrench, the large portion of theopening being located at the outer end thereof and of a size to permitthe head to pass over the collar and be positioned between the collarand the ratchet wheel and the reduced portion of the opening beinglocated at the inner end thereof and being of a size to fit the windingshaft in the groove between the ratchet wheel and the collar, and a pairof pawls mounted on the head at the reduced portion of th opening andhaving inwardly facing engaging portions, one of the pawls being adaptedto engage the ratchet wheel when the teeth thereof are facing in eitherdirection.

PETER CHARLES SNYDER.

REFERENCES CITED The following references are of record in the file ofthis patent:

, UNITED STATES PATENTS Number Name Date 83,558 Sims Oct. 27, 1868673,742 Wade May 7, 1901 740,878 Lewis Oct. 6, 1903 1,063,770Brocklebank June 3, 1913 2,474,402 Napier June 28, 1949 FOREIGN PATENTSNumber Country Date 44,822 France Apr. 15, 1935

